VSA DTC Troubleshooting: 41-11, 42-11, 43-11, 44-11
DTC 41-11: Right-Front Wheel Lock
DTC 42-11: Left-Front Wheel Lock
DTC 43-11: Right-Rear Wheel Lock
DTC 44-11: Left-Rear Wheel Lock
The DTCs may be indicated under these conditions:
The vehicle goes into a spin.
The ABS or VSA continues to operate for a long time.
Snow, dirt, or debris build-up on the wheel speed sensor or magnetic encoder.
Misadjusted brake pedal position switch.
Contaminated brake fluid.

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.

DTC Description
DTC
Freeze Frame
41-11 Right-Front Wheel Lock
    
42-11 Left-Front Wheel Lock
    
43-11 Right-Rear Wheel Lock
    
44-11 Left-Rear Wheel Lock
    

1.
Brake drag check:

Brake drag check
?1.
Drive the vehicle to see if the brakes drag or if the pedal is high and hard. This can take 20 or more brake pedal applications during an extended test-drive.

?2.
With the engine running, raise and support the vehicle, then spin the appropriate wheel by hand.
DTC
Appropriate Wheel
41-11
Right-front
42-11
Left-front
43-11
Right-rear
44-11
Left-rear

Is there brake drag?

     
YES
     
     
     
     
NO
     
     
     
Go to step 2.
2.
Wheel speed sensor installation check:

Wheel speed sensor installation check
?1.
Check that the appropriate wheel speed sensor is properly mounted.
DTC
Appropriate Wheel Speed Sensor
41-11
Right-front
42-11
Left-front
43-11
Right-rear
44-11
Left-rear

Is the wheel speed sensor installation OK?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
Reinstall the wheel speed sensor, and recheck the mounting position.?
3.
Problem verification:

Problem verification
?1.
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?4.
Test-drive the vehicle at 6 mph (10 km/h) for 20 seconds or more.
NOTE: Drive the vehicle on the road, not on a lift.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
     

Is DTC 41-11, 42-11, 43-11, or 44-11 indicated?

     
YES
     
     
     
The failure is duplicated. Go to step 4.
     
NO
     
     
     
If any other DTCs are indicated, go to the indicated DTCs troubleshooting. If DTCs are not indicated, intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.?
4.
VSA modulator-control unit check (update):

VSA modulator-control unit check (update)
?1.
Update the VSA modulator-control unit if it does not have the latest software.

?2.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?3.
Test-drive the vehicle at 6 mph (10 km/h) for 20 seconds or more.
NOTE: Drive the vehicle on the road, not on a lift.

?4.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
     

Is DTC 41-11, 42-11, 43-11, or 44-11 indicated?

     
YES
     
     
     
Check for loose terminals in the VSA modulator-control unit 21P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit.?
     
NO
     
     
     
Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.?